/**
 *    Copyright ${license.git.copyrightYears} the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.mybatis.generator.codegen.ibatis2.dao.elements;

import java.util.Set;
import java.util.TreeSet;

import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;
import org.mybatis.generator.api.dom.java.Interface;
import org.mybatis.generator.api.dom.java.JavaVisibility;
import org.mybatis.generator.api.dom.java.Method;
import org.mybatis.generator.api.dom.java.Parameter;
import org.mybatis.generator.api.dom.java.TopLevelClass;

/**
 * 
 * @author Jeff Butler
 * 
 */
public class UpdateByExampleSelectiveMethodGenerator extends AbstractDAOElementGenerator {

  @Override
  public void addImplementationElements(TopLevelClass topLevelClass) {
    Set<FullyQualifiedJavaType> importedTypes = new TreeSet<FullyQualifiedJavaType>();
    Method method = getMethodShell(importedTypes);

    method.addBodyLine("UpdateByExampleParms parms = new UpdateByExampleParms(record, example);"); //$NON-NLS-1$

    StringBuilder sb = new StringBuilder();

    sb.append("int rows = "); //$NON-NLS-1$

    sb.append(daoTemplate.getUpdateMethod(introspectedTable.getIbatis2SqlMapNamespace(),
        introspectedTable.getUpdateByExampleSelectiveStatementId(), "parms")); //$NON-NLS-1$
    method.addBodyLine(sb.toString());

    method.addBodyLine("return rows;"); //$NON-NLS-1$

    if (context.getPlugins().clientUpdateByExampleSelectiveMethodGenerated(method, topLevelClass, introspectedTable)) {
      topLevelClass.addImportedTypes(importedTypes);
      topLevelClass.addMethod(method);
    }
  }

  @Override
  public void addInterfaceElements(Interface interfaze) {
    if (getExampleMethodVisibility() == JavaVisibility.PUBLIC) {
      Set<FullyQualifiedJavaType> importedTypes = new TreeSet<FullyQualifiedJavaType>();
      Method method = getMethodShell(importedTypes);

      if (context.getPlugins().clientUpdateByExampleSelectiveMethodGenerated(method, interfaze, introspectedTable)) {
        interfaze.addImportedTypes(importedTypes);
        interfaze.addMethod(method);
      }
    }
  }

  private Method getMethodShell(Set<FullyQualifiedJavaType> importedTypes) {
    FullyQualifiedJavaType parameterType;

    if (introspectedTable.getRules().generateRecordWithBLOBsClass()) {
      parameterType = new FullyQualifiedJavaType(introspectedTable.getRecordWithBLOBsType());
    } else if (introspectedTable.getRules().generateBaseRecordClass()) {
      parameterType = new FullyQualifiedJavaType(introspectedTable.getBaseRecordType());
    } else {
      parameterType = new FullyQualifiedJavaType(introspectedTable.getPrimaryKeyType());
    }

    importedTypes.add(parameterType);

    Method method = new Method();
    method.setVisibility(getExampleMethodVisibility());
    method.setReturnType(FullyQualifiedJavaType.getIntInstance());
    method.setName(getDAOMethodNameCalculator().getUpdateByExampleSelectiveMethodName(introspectedTable));
    method.addParameter(new Parameter(parameterType, "record")); //$NON-NLS-1$
    method.addParameter(new Parameter(new FullyQualifiedJavaType(introspectedTable.getExampleType()), "example")); //$NON-NLS-1$

    for (FullyQualifiedJavaType fqjt : daoTemplate.getCheckedExceptions()) {
      method.addException(fqjt);
      importedTypes.add(fqjt);
    }

    context.getCommentGenerator().addGeneralMethodComment(method, introspectedTable);

    return method;
  }
}
